Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Horst-Hannes Cerjak"'
Publikováno v:
Welding in the World. 61:75-79
Weld deposits from advanced high-strength steel constructions may suffer from severe embrittlement reactions caused by non-qualified PWHT procedures. This effect, if not detected, can lead to catastrophic brittle failure of the component. A temper em
Publikováno v:
Scopus-Elsevier
TU Graz
TU Graz
Publikováno v:
Steel Construction. 6:265-270
In this contribution the historical development of materials and applied welding procedures in the field of hydropower plant shafts and penstocks is summarized. Based on the experiences and failure cases observed in the past in combination with moder
Autor:
Horst-Hannes Cerjak, Peter Mayr
Publikováno v:
Transactions of the Indian Institute of Metals. 63:131-136
The term “long-term creep properties” for heat resistant steels is mainly reflected by the 100.000 hour creep rupture strength at elevated testing temperature. Often, results of high stress, short-term creep tests are extrapolated to this 100.000
Publikováno v:
Transactions of the Indian Institute of Metals. 63:137-143
Modern advanced 9–12 % Cr steels are complex alloys with excellent creep strength even at high temperatures up to 620°C. The mechanical properties of these steels are significantly influenced by the presence and stability of various precipitate po
Publikováno v:
Materials at High Temperatures. 27:67-72
The creep strength of martensitic 9% chromium steels is strongly coupled with the formation and interaction of different precipitate populations like MX (Nb,V)(C,N), M23C6, laves phase and modified Z-phase. Changes in microstructure can be correlated
Publikováno v:
Science and Technology of Welding and Joining. 14:210-215
Martensitic precipitation hardening steels are characterised by high strength which is achieved by a martensitic matrix and precipitates. The material also shows a good ductility and toughness if properly heat treated. But welding of these steel type
Autor:
Horst-Hannes Cerjak, Mehran Maalekian
Publikováno v:
Welding in the World. 53:R44-R51
A thermal phase transformation finite element model is presented to study the orbital friction welding of eutectoid steel components. The experimental microstructure observations and the hardness profile in the weld and heat-affected zone verify the
Publikováno v:
TU Graz
Kurzfassung Die Druckrohrleitung (DRL) des Kraftwerks Kaprun wurde während und nach dem 2. Weltkrieg unter teilweise sehr schwierigen Bedingungen hergestellt und nach über 60 Jahren 2004 außer Betrieb genommen. Zur Verschweißung der Rohrlängsnä
Publikováno v:
Acta Materialia. 56:2843-2855
For the first time a comparative thermal analysis of the friction welding process using various heat generation models is presented. The heat-generation rate in orbital friction welding of steel bars is analyzed using four different methods; constant